Molded surface of a concrete product



FIG. 1 is a front view of an embodiment of a molded surface of a concrete product, according to our new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a perspective view thereof.

The broken lines in all views are for the purpose of illustrating portions of the concrete product that form no part of the claimed design. 

The ornamental design for a molded surface of a concrete product, as shown and described. 